Roof flange construction



May 23 1961 H. s. CHURCH 2,985,465

ROOF' FLANGE CONSTRUCTION Filed Deo. 20, 1957 2 Sheets-Sheet 1 am vl Mlm INVENTOR. g Herma/1a S. hwz'h BY 9mm@ ATTORNEYS May 23, 1961 H. s. CHURCH' ROOF FLANGE CONSTRUCTION 2 Sheets-Sheet 2 Filed Deo. 20, 1957 1N VENTOR. Herman@ S. Church QWX/ ATTORAHYS either of which voids may be filled with a plastic roofing compound sealing material Yfor aiding in sealing between the pipe and seal means.

By way of example, embodiments of the roof ange construction of the present invention are illustrated in the accompanying drawings forming a part hereof, wherein like numerals indicate similar parts throughout the sev eral views, and in which:

Y Fig. l is la top plan view of the first embodiment of the roof ange construction comprising the present invention; Fig. 2, a sectional view, part in elevation, looking in the direction of the arrows 2-2 in Fig. l;

Fig. 3, a vertical sectional view, part in elevation, showing the roof ange construction of Figs. l and 2 installed for sealing between la flat roof and a vent pipe extending therethrough;

Fig. 4, an enlarged fragmentary sectional view taken from Fig. 3 and showing the area of the seal between the roof flange and the pipe;

, Fig. 5, a vertical sectional view, part in elevation, showing the roof iiange construction of Figs. 1 and 2 installed sealing between a flat roof and a dr-ainpipe of said roof;

Fig. 6, an enlarged fragmentary sectional view taken from Fig. 5 showing the area of the seal between the roof ilange and the pipe;

Fig. 7, a vertical sectional view of a second' embodiment of the roof flange construction comprising the present invention;

Fig. 8, a top plan view showing the roof ange construction of Fig. 7 installed on a roof land sealing between a roof and vent pipe extending therethrough;

Fig. 9, a sectional view, part in elevation, looking in the direction of the arrows 9 9 in Fig. 8; and

Fig. 10, an enlarged fragmentary sectional view taken from Fig. 9 and showing the `area of :the seal between theV roof flange and the pipe. f

The first embodiment of the roof flange construction comprising the present invention is shown in Figs. l and 2 and includes a substantially at flange portion 11, preferably having a rectangular outer edge 12. Further flange portion 11 terminates inwardly and preferably central thereof in a neck portion 13 which tangles inwardly and upwardly away from the flange portion.

YStill further the neck portion 13 terminates upwardly, spaced Vabove the flange portion '11, in `a sealing portion 14 with this sealing portion terminating inwardly in a predetermined size of opening 15. The entire roof ange construction is formed from a exible material which may be rubber or one of the synthetic rubber compositions, but it is preferred that this material is neoprene'for its oil, acid and sun-checking resistance.

. Flange portion 11, in cross section, rmay be formed of a steadily decreasing width outwardly and tapers to a socalled feather edgeV at outer edge 12. The maximum thickness of ange portion 11 is at the point of connection between this flange portion and the neck portion 13, with the neck portion 13 having approximately the same cross-sectional thickness as the maximum thickness of tiange portion 11.

Both ange portion 11 and neck portion 13 are, however, relatively thin, as shown, for maximum flexibility, with the sealing portion 1i4 having a greatly increased thickness in the order of between two and six times theV thickness of neck portion 13. Thus the sealing portion 14 is of greatly increased mass over any given section of the flange portion 11 and neck portion 13 and this sealing portion therefore protrudes inwardly from the neck portion 13 terminating preferably in a circular opening 15.

Sealing portion 14 at opening 15 is provided with an upper sealing lip 16 and lower sealing lip '17 with both of these sealing lips being substantially triangular in cross section having their `apices at the opening 15 and increas- Y ing Vin width outwardly. The lower side of the upper sealing lip 16 and the upper side of the lower sealing lip 17 angle upwardly and downwardly respectively, as best seen in Fig. 2, so that these two sealing lips may be com.- pressed outwardly without interference from each other.

Further the upper sealing "lip 16 angles outwardly to the upper extremity of sealing portion 14, thus forming the yangled portion 18 at the top of the sealing portion. Finally the lower sealing lip 17 angles outwardly and downwardly vto the lower extremities of the sealing portion 14 forming the angled portion 19 at the lower edge of the sealing portion.

As shown in Figs. l and 2, the rst embodiment of the roof flange construction has the axis of the opening 15 at right angles to the plane of the flange portion 11 so that the plane of the upper extremities of the sealing portion 14 is generally parallel to the plane of the ange portion 11. Thus this particular embodiment is adapted for use with a flat roof or a roof having only a slight pitch.

As an example, for showing the increased mass of the Vsealing portion 14 over the neck portion 13, the neck portion may have a thickness of about 1A; inch While the sealing portion 14 at its minimum thickness, that is, the depression formed between the sealing lip 16 and sealing lip 17 may be about r/s inch. Furthermore with these dimensions the thickness ofthe sealing portion at the apex of the upper sealing lip 16 will be about 7/16 inch and at the apex of the lower sealing lip 17 about 5/8 inch, with this sealing portion 14 having substantially the same dimensions throughout its circumference because of the axis of the opening 15 extending at right angles to the plane of the flange portion E11. Y

As shown in Fig.- 3, the first embodiment of the roof flange construction may be installed for providing a waterproof and weatherproof seal between a flat roof, generally indicated at 20, and a vent pipe, generally indicated at 21. The fiat roof 20 may be formed of a layer of wood sheathing 22 and a series of layers 23 of asphalt impregnated and coated rooting material of usual construction. Y v

The vent pipe Z1 is usually a cast-iron pipe having an outside diameter varying from about four inches to about four and one-quarter inches, and extends upwardly through the roof 20 through an opening 24. Further the outer surface of the pipe 20 may range from relatively smooth to extremely rough.

The roof flange construction of the present invention is preferably installed by iirst applying the initial layer of roofing material 23 on the wood sheathing 22 and then telescoping the `sealing portion 14 of the roof ange construction over the pipe 21 until the flange portion 11 is lying flat on this first layer of roofing material 23. An asphalt roof sealing compound may be placed between the ange portion 11 and the first layer of roofing material 23 if desired, but under most circumstances an excellent seal will be provided between these materials and also the additional l-ayers of roofing materials 23 merely by the asphalt coating'on this roofing material adhering to and sealing with the flange portion 11.

The sealing lips 16 and 17 on the roof flange construction are preferably formed with inside diameters of S15/i6 inches, that is, 1A@ inch less than the possible minimum outside diameterY of the pipe 21, so that when the sealing portion 14 is telescoped over pipe 21, a compression is provided therebetween compressing the apices of the sealing lips 16 and 17 and providing a tight seal between these sealing lips and the pipe 21. This compression between the sealing portion 14 and the pipe 21 is insured and maintained indefinitely due to the greatly increased thickness or mass of this sealing portion 14 as hereinbefore described Iand shown.

The void formed around the pipe 21 between the angled portion of the roof flange and this pipe is filled with a usual asphalt roofing compound shown at 25 and in enlarged View in Fig. 4,V thereby completing the seal between pipe 21 and the sealing portion 14 of the roof liange.l Finally asphalt roofing compound may be applied between the overlying layers of roofing material 23 and the flange portion 1i1 of the roof flange as shownat 26 to provide a more efficient seal at this point and prevent moisture from working back between the flange portion 11 and the layers of roof material 23.

As shown in Figs.. 5 and 6, this first embodiment of the roof flange construction comprising the present invention may also -be used for providing a seal between a flat roof and a drainpipe, Such pipe being used for draining water from the roof.V As shown in Fig. 5, the roof flange construction is installed in a similar manner except that the neck portion 13 extends downwardly rather than up wardly. v Thus the flange portion 11 is positioned between the layers of roofing material 23 of the flat roof 20 and above the wood sheathing 22, but the neck portion 1-3 extends through a larger opening 27 and projects downwardly below the wood sheathing 22.

The drainpipel 28 similarly is telescoped by the sealing portion 14 so that the sealing lips 16 and 17 provide. a seal against this drainpipe. Finally, since the angled portion 19 of sealing lips 17 is exposed upwardly, the void formed by the angled portion 19 and the pipe 28 is filled with the roofing compound, as shown at 29, with this seal between sealing portion 14 and pipe 28 beingy shown in enlarged view in Fig. 6.

The second embodiment of the roof flange construction comprising the present invention is shown in Fig. 7 and is very similar to the first embodiment with the exception that it is adapted for sealing between a vent pipe and a roof having more than just a slight pitch. The only change required from theY first embodiment construction, for providing this second embodiment construction, is that the planev of the upper extremities of the sealing portion 1does not extend in a plane parallel to the plane of the ange portion, but rather these planes extend at an angle, the degree. of which depends on the pitch of the roof.

Referring to` Fig. 7, similar to the first embodiment, the roof ange construction includes the fiange portion 111 tapering outwardly to the feather edge 112 and terminating inwardly in the upwardly and inwardly angled neck portion 113. Further neck portion terminates upwardlyv in the sealing portion 114, with this sealing portion terminating inwardly at the opening 115 and having the upper sealing lip 116 and lower sealing lip 1'17.

Sealing lips 116 and 1117 are similarly formed with sealing lip 116 angling upwardly to the upper extremities of the sealing portion 114 forming the angled portion '1I18 and the lower sealing lip 117 angling downwardly to the lower extremities of the sealing portion to form the angled portion 119. Finally, flange portion 111 and neck portion 113 are formed relatively thin, whereas the sealing portion i1'14 is formed of increased thickness and having a minimum thickness in the order of two times that of the nec'k portion 1'13 to provide a greater mass of material behind the sealing lips 116 and 117 and insure the proper sealing thereof.

Thus, the sealing portion 114 again may have a thickness of between about two and about six times the thickness of the 'neck portion 113, and' as an example of the dimensions, the thickness of the neck portion 1'13 may again be, 1/s inch with the minimum thickness of the sealingportion 1114', that is, between the sealing lips 1.16 and 117 being about 1A inch at the right-hand side of the sealing, portion as shown in Fig. 7, with this minimum thickness increasing to about inch at the lefthand side as shown in Fig. 72 This variation in thickness ofthe sealing portion 114 is, of course, caused by the fact that thev axis of the opening 115 does not extend perpendicularly to the plane of the ange portion 111 soy thatl the plane of the upper extremities of the sealing portion- 114l extends at an angle to the plane of the flange portion 111, as shown.

Further, in the above example the thickness of the sealing portion 114- at the apex of the upper sealing lip 1116 is about 7/ 16 inch throughout the. circumference of this sealing lip. Finally the minimum thickness of thev sealing portion at the apex of the lower sealing lip 117 is about 1/2 inch, as shown at the right-hand side of Fig. 7, with the maximum thickness at this point being about 5A; inch, as Shown at the left-hand side of Fig. 7.

As shown in Figs. 8, 9 and l0, this second embodiment of the roof flange construction is applied to the roof, generally indicated at 130, surrounding and providing a waterproof and weatherproof seal between this roof and the vent pipe 131. In this case, however, the roof is formed from the usual wood sheathing 132 covered with the usual overlapped asphalt shingles 133, with the vent pipe 131 extending through the opening 134 in the Wood sheathing and shingles.

The same relationship of sizes between the outer diameter of the vent pipe l131 and the inner diameter of the sealing lips 116 and 117 is provided in this second ernbodiment as was provided in the first embodiment, that is, the inner diameter of the sealing lips being less than the minimum possible outer diameter of the vent pipe 131 to provide compression between these sealing lips and the vent pipe thereby insuring sealing therebetween. Furthermore the usual asphalt roofing compound is applied at 135 lfilling the void formed between the angled portion 118 of the sealing portion 114 and the vent pipe 1311,. thereby completing the seal betwen sealing portion 11,4 and, the: vent pipe, such completed seal being shown in enlarged View in Fig. l0.

This second embodiment of the roof flange construction isV preferably applied during the application of the shingles 133 to the Wood sheathing 132 with the upper half of the flange portion 111 underlying the shingles 133 and the lower half of this ange portionr overlying these, shingles as shown. Finally roofing compound may be applied between the edge 1=12 of ange portion 111 andthe shingles I3-3 where'y this flange portion overlies the shingles and. is therefore exposed, such roofing cornpound being indicated at 136 in Figs. 8 and 9.

It. is important for the: purposes of the present invention to provide the ange portion 11 or 111 and the neckl portion 13 or 1'13 relatively thin to obtain maximumv flexibility of` these portions so that the roof flange construction may conform to the particular roof upon which it isY being applied. For instance, as shown in the second embodiment, the. pitch of the roof 130 can obviouslyy vary considerably and the flange portion and neck portion. 113 will still easily conform to this different pitch ofi roof. Also, aproper and sufficient seal will still be. providedbetween the; sealing portion 114 and any vent pipe131.

Further, itis important for the purposes of the present invention that the: sealing portion 14 or 114 are formed of` increased: thickness providing an increased resilient massl at; this. point; over the thickness of the neck portion 113. With this increased mass of the sealing portions an. increased resistance to deformation is provided backing up the sealing lips 16 and 17 or 116 and 117, thereby insuring an. eflicient. seal between these sealing lips and the particular vent pipes around which they are sealing.

Still further it is advantageous to provide the angled portion 35 or 135 at the upper extremities of the sealingportion 14 or 114 so that the voids formed between these angled portions and the vent pipes can be filled with roofing compound to insure a more complete and lastingA seal; It is also. advantageous to provide they angled portion 1`9 or 119 at'the lower extremities of the sealing portion 14 or 114 so that this roof flange construction is adaptable for merely being reversed to provide a seal between a roof and a drainpipefrom the roof.

Additionally, it is advantageous to taper the flangeportion 11 or 1151 outwardly and terminate these flange portions in a feather edge 12 or 112 for increased flexibility of.: theflange:V portions and for more efficient' sealing oflthe edges against. the particular roof. Finally,

since` therentiref. roof flanges ofthe: first andv second erro.v

bodiments are formed of one piece and totally of resilient material, these roof anges will automatically compensate for any differences in expansion and contraction between the various materials while still maintaining a waterproof and weatherproof seal.

ln the foregoing description, certain terms have been used for brevity, clearness and understanding, but no unnecessary limitations are to be implied therefrom, because such words are used for descriptive purposes herein and are intended to be broadly constgued.

Moreover, the embodiments of the improved construction illustrated and described herein are by way of example and the scope of the present invention is not limited to the exact details of the construction shown. Having now described the invention, the construction, operation and use of preferred embodiments thereof, and the advantageous new and useful results obtained thereby, the new and useful construction and reasonable mechanical equivalents thereof obvious to those skilled in the art are set forth in the appended claims.

I claim:

l, Roof flange construction for providing a seal between a roof and a pipe positioned at an opening of the roof including a substantially at resilient material flange portion, the flange portion surrounding and terminating inwardly in an integral resilient material tubular neck portion, the neck portion extending from the flange portion and terminating spaced from said flange portion in an integral resilient material sealing portion, the sealing portion having an opening for-med therethrough, the sealing portion having resilient material sealing lip means including spaced upper and v lower inwardly tapered sealing lips formed thereon and extending inwardly of the sealing portion surrounding said opening for resiliently sealing against a pipe received in the opening, the sealing lip means upper sealing lip having an angled upper side surface angling downwardly and inwardly toward the opening forming a void between the sealing portion and the pipe received in said opening, the sealing lip means lower sealing lip having Van angled lower side surface angling upwardly and inwardly toward the opening forming a void between the sealing portion and the pipe received in said opening, at least one of said voids being adapted for being filled with a plastic rooting compound to increase the seal between the sealing portion and the pipe, and the minimum thickness of the sealing portion at least in outward alignment'with the sealing lip means upper and lower sealing lips being greater than the maximum thickness of the neck and ilange portions for providing an increased mass to back up and retain the lip means resiliently sealed against the pipe.

2. Roof flange construction for providing a seal between a roof and a pipe positioned at an opening of the roof including a substantially flat resilient material flange portion, the ilange portion surrounding and terminating inwardly in an integral resilient material tubular neck portion, the neck portion extending from the ange portion and terminating spaced from said ange portion in an integral resilient material sealing portion, the sealing portion having an opening formed therethrough, the sealing portion having resilient material sealing lip means including spaced upper and lower inwardly tapered sealing lips formed thereon and extending inwardly of the sealing portion surrounding the opening and resiliently sealing against a pipe received in said opening, the sealing lip means upper sealing lip having an angled upper side surface angling downwardly and inwardly toward the openingforming a void between the sealing portion and the pipe received in said opening, the sealing lip means lower sealing lip having an angled lower side surface angling upwardly and inwardly toward the opening forming a void between the sealing'portion and the pipe received in said opening, and at least one of said voids being adapted for being filled with a plastic rooting com- 8 pound to increase the seal between the sealing portion and the pipe. i

3. Roof flange construction for providing a seal between a roof and a pipe positioned at an opening of the roof including a substantially flat resilient material flange portion, the flange portion surrounding and terminating inwardly in an integral resilient material tubular neck portion, the neck portion extending from the flange portion and terminating spaced from said ange portion in an integral resilient material sealing portion, the sealing portion having an opening formed therethrough, the sealing portion having spaced upper and lower resilient material sealing lip means formed thereon and extending inwardly of the sealing portion surrounding the opening for resiliently sealing against a pipe received in said opening, the upper sealing lip means having an angled upper side surface angling downwardly and inwardly toward the opening forming a void between the sealing portion and the pipe received in said opening, the lower sealing lip means having an angled lower side surface angling upwardly and inwardly toward the opening forming a void between the sealing portion and the pipe received in said opening, at least one of said voids being adapted for being filled with a plastic roofing compound to increase the seal between the sealing portion and the pipe, and the minimum thickness of the sealing portion at least in outward alignment with the upper and lower sealing lip means being at least double the maximum thickness of the neck and flange portions for providing an increased mass to back up and retain the lip means resiliently sealed against the pipe.

4. Roof ange construction for providing a seal between a roof and a pipe positioned at an opening of the roof including a substantially flat resilient material flange portion,lthe ilange portion terminating outwardly in a substantially feather edge, the ange portion surrounding and terminating inwardly in an integral resilient material tubular neck portion, the neck portion extending from the flange portion and terminating spaced from said iiange portion in an integral resilient material sealing portion, the sealing portion having an opening formed therethrough, the sealing portion having resilient material sealing lip rmeans including spaced upper and lower inwardly tapered sealing lips formed thereon and extending inwardly of the sealing portion surrounding the opening and resiliently sealing against a pipe received in said opening, the sealing lip means upper sealing lip having an angled upper side surface angling downwardly and inwardly toward the opening forming a void between the sealing portion and the pipe received in said opening, the sealing lip means lower sealing lip having an angled lower side surface angling upwardly and inwardly toward the opening forming a void between the sealing portion and the pipe received in said opening, and at least one of said voids being adapted for being filled with a plastic rooting compound to increase the seal between the sealing portion and the pipe.

References Cited in the tile of this patent Belgium June 3o, v'1952 

